Mean Scores (Standard Deviations) of age, clinical interviews, WISC-III, PPVT, Theory of Mind task, n-back task, Stop task per Participant Group.

* = p < .05;
** = p < .01;
*** = p < .001;
n.s. = non-significant.
a Number of participants may vary per task, since some children did not finish all tasks (see Procedure).
b Five children in the ADHD group scored on the ADI-R above the cut-off for ASD (on the basis of Risi et al.’s criteria [40]).
c Two children in the ADHD group scored above the ADOS criteria for ASD.
d Seven children in the ASD group scored within our criteria for ADHD on the PICS (above or one point below the cut-off on the PICS).
Mean Scores (Standard Deviations) of age, clinical interviews, WISC-III, PPVT, Theory of Mind task, n-back task, Stop task per Participant Group.